Rigol DM3068, Руководство по обслуживанию

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RIGOL Chapter 2 Performance Test
Service Guide for DM3068
2-10
2.5.2 Gain Test
The gain test inspects the accuracy of the meter under a full range. It is necessary
only when a regular gain offset is occurred to a function or range.
1. To test the DC gain:
(1) Make sure you have carefully read the “Test Conditions”.
(2) Connect your meter with the calibrator.
(3) Perform a step-by-step test for the functions under different ranges
specified in the following table and set the integration time to 100PLC.
Please note that none of the math function is allowable unless otherwise
stated.
(4) Input signals in accordance with the table below using the calibrator and
compare the results with the limits from the table (make sure the calibrator
can adequately output).
Table 2-4 Gain test items
Function
[1]
Range
Test
Signal
Quick
Test
[4]
Allowable Error Range
24 hours 90 days 1 year
DC Voltage 200.0000mV 200mV ±8μV ±11μV ±13μV
200.0000mV -200mV ±8μV ±11μV ±13μV
2.000000V 2V Q ±40μV ±52μV ±82μV
2.000000V -2V ±40μV ±52μV ±82μV
20.00000V 20V Q ±480μV ±700μV ±900μV
20.00000V -20V ±480μV ±700μV ±900μV
200.0000V 200V Q ±5.2mV ±9.2mV ±11.2mV
200.0000V -200V ±5.2mV ±9.2mV ±11.2mV
1000.000V 1000V Q ±26mV ±50mV ±65mV
1000.000V -1000V ±26mV ±50mV ±65mV
DC Current
[2]
200.0000μA 200μA Q ±44nA ±110nA ±130nA
200.0000μA -200μA Q ±44nA ±110nA ±130nA
2.000000mA 2mA ±200nA ±660nA ±1.06μA
2.000000mA -2mA ±200nA ±660nA ±1.06μA
20.00000mA 20mA Q ±3.8μA ±9μA ±13μA
20.00000mA -20mA Q ±3.8μA ±9μA ±13μA
200.0000mA 200mA ±24μA ±66μA ±106μA
200.0000mA -200mA ±24μA ±66μA ±106μA
2.000000A 2A Q ±1.4mA ±2mA ±2.4mA
2.000000A -2A ±1.4mA ±2mA ±2.4mA
10.00000A 10A ±11mA ±13mA ±16mA
10.00000A -10A ±11mA ±13mA ±16mA
Resistance
[3]
200.0000Ω 200Ω ±12mΩ ±24mΩ ±28mΩ
2.000000kΩ 2kΩ ±50mΩ ±180mΩ ±220mΩ
20.00000kΩ 20kΩ Q ±500mΩ ±1.8Ω ±2.2Ω
200.0000kΩ 200kΩ ±5Ω ±18Ω ±22Ω
1.000000MΩ 1MΩ Q ±30Ω ±110Ω ±130Ω
10.00000MΩ 10MΩ ±1.6kΩ ±3.1kΩ ±4.1kΩ